What Can I Do If The Printer Does Not Power On; What Can I Do If The Line Sensor Has Problems Detecting Media - HP DesignJet 2500CP Service Manual

8 Check for missing/blocked starwheels or starwheel mount assemblies.
Explanation These parts can lead to media jams if missing or blocked.
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9 The Carriage is at the incorrect height in relation to the Drive Roller.
Perform the Refill Calibration ' page 5 8 and try to load the media again.
The refill station positioning must be checked afterwards since it is
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affected. The refill station can be adjusted to accommodate the change in
Printhead Height. The specification for Printhead Height is 1.2 1.4mm.
Printhead Heights higher than this can adversely affect print quality.

What can I do if the Printer does not Power ON?

1 Check that the power cord is connected correctly.
2 Check that the Flash SIMM is installed correctly in the correct slot (the
first slot from the left) at the back of the Printer.
3 On the Main PCA, in the Electronics Module, there are other fuses that
are not controlled by the firmware so that, if they are burnt, they can
cause a no power up problem. It is recommended to check the
resistance of the motors in a no power up situation before
installing a new Electronics Module. If you have a short in one motor,
you will burn the new Electronics Module.
4 Try to disconnect all the cables, apart from the Front Panel Cable, from
the Electronics Module and then try to power ON the Printer again. If
nothing appears on the front panel display, then replace the Electronics
Module ' page 8 6. If the Printer does Power On with the cables
disconnected, then the problem must be with another component of the
Printer. To find the faulty component, power OFF the Printer and connect
one of the cables and power ON again. Once the faulty component is
connected, it will not allow the Printer to power ON. This component
should then be replaced.

What can I do if the Line Sensor has Problems Detecting Media?

1 Excessive ink deposits on the drive roller surface can fool the sensor by
reflecting the light. Clean the drive roller ' page 9 3.
2 The lens cover, which is installed on the line sensor, is dirty. Replace the
lens cover ' Users Guide, Chapter 10 (Lens Maintenance).
3 The Line Sensor is not calibrated correctly. Perform the Line Sensor
calibration ' page 5 9.
4 The Line Sensor is installed incorrectly. Try to reinstall it and make sure
that it is connected and seated correctly. If the problem continues, replace
the Carriage Assembly ' page 8 42.
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HP DesignJet CP Series Printers
Troubleshooting